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John Sullivan


401 North 31st Street, Suite 1500, Billings, MT 59101

John is an associate in the commercial litigation practice group.

John previously served in the U.S. Department of Justice as an Assistant U.S. Attorney in the criminal division where he gained valuable trial experience and worked closely with the Federal Bureau of Investigation, Drug Enforcement Administration, and various state and local law enforcement agencies. John has also briefed and argued cases before the United States Court of Appeals for the Ninth Circuit. His background prosecuting cases and overseeing government investigations gives him valuable insight on complex civil litigation matters.

Before joining Holland & Hart, John served as a law clerk to the Honorable Sam E. Haddon of the United States District Court for the District of Montana.


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